Discussion

If in a code language, 34687 is written as 43778, how will 47592 be written in that code language ?

Answer: A

47592 is written as 56683.

Compare 34687 with 43778 digit by digit:

3 + 1 = 4, 4 - 1 = 3, 6 + 1 = 7, 8 - 1 = 7, 7 + 1 = 8

The rule is +1, -1, +1, -1, +1. Applying it to 47592:

4 + 1 = 5, 7 - 1 = 6, 5 + 1 = 6, 9 - 1 = 8, 2 + 1 = 3, giving 56683.

The other options break the alternating pattern in one or more places, for example 55683 subtracts 2 from the second digit instead of 1.

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